An example of effective in game communication

This is an example of effectively communicating with teammates that worked for me so I wanted to share it since I know this is one of the things everyone struggles with.

https://www.youtube.com/watch?v=Szk6Zn7cMks

This is a clip consisting of footage from my live stream where I'm playing Renekton top and am trying to help a diamond adc main figure out proper positioning. You'll have to pardon some of the language but I'm quite proud of this game because I managed to get through to the guy and got him to change his playstyle and this helped turn around a game we were losing (in addition to the kindred who strapped our entire team on her back and carried hard)

Have a look and let me know what you think along with any suggestions on how to improve upon this kind of communication.